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    • 5. 发明授权
    • Image forming apparatus with transfer voltage detection
    • 具有转印电压检测的图像形成装置
    • US08831452B2
    • 2014-09-09
    • US12873686
    • 2010-09-01
    • Toshiyuki Yamada
    • Toshiyuki Yamada
    • G03G15/16G03G15/00
    • G03G15/1605G03G15/1675
    • An image forming apparatus includes a photosensitive member; charging device for electrically charging the photosensitive member; an exposure device for exposing to light the photosensitive member to form an electrostatic latent image; a developing device for developing the electrostatic latent image into a toner image; a transfer member for forming a transfer portion at which the toner image is to be transferred from the photosensitive member onto a transfer material; a voltage control portion for controlling a transfer voltage to be applied to the transfer member so that a current passing through the transfer member is constant; and a current setting device for setting a current value in constant current control by the voltage control portion so that the current value is decreased when a ratio of a potential difference between the transfer voltage and a light portion potential provided by the exposure device to a potential difference between the transfer voltage and a dark portion potential provided by the exposure device is decreased and so that the current value is increased when the ratio is increased.
    • 图像形成装置包括感光构件; 充电装置,用于对感光构件进行充电; 曝光装置,用于曝光以使感光构件发光以形成静电潜像; 用于将静电潜像显影成调色剂图像的显影装置; 用于形成转印部分的转印部件,其中调色剂图像将从感光部件转印到转印材料上; 电压控制部分,用于控制施加到转印部件的转印电压,使得通过转印部件的电流恒定; 以及电流设定装置,用于通过电压控制部分设定恒定电流控制中的电流值,使得当转印电压和曝光装置提供的光部分电位之间的电位差与电位之间的电位值的比值减小电流值 转印电压和由曝光装置提供的暗部电位之间的差异减小,并且当比率增加时电流值增加。
    • 9. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20110038654A1
    • 2011-02-17
    • US12853893
    • 2010-08-10
    • Toshiyuki Yamada
    • Toshiyuki Yamada
    • G03G15/20
    • G03G15/6585G03G2215/00801G03G2215/00805
    • In the related art of a method called a gloss mark, clear toner capable of adjusting glossiness without varying color phase has been used in order to prepare a gloss mark. However, a development device for clear toner is necessary in addition to a development device for colored toner. Accordingly, there has been a problem of upsizing and cost increase of an image forming apparatus.The image forming apparatus of the present invention forms a gloss mark only with colored toner without using clear toner. Specifically, at an area of which gloss is to be lowered, a part of colored toner required for forming an image is formed and fixed on a sheet, and then, the residual quantity which is not formed before the fixing out of the colored toner required for forming the image is formed and fixed so as to be superimposed to the fixed colored toner.
    • 在称为光泽标记的方法的相关技术中,为了制备光泽标记,已经使用了能够不改变色相来调节光泽度的透明调色剂。 然而,除了用于彩色调色剂的显影装置之外,还需要用于透明调色剂的显影装置。 因此,存在图像形成装置的大型化和成本增加的问题。 本发明的图像形成装置仅使用彩色调色剂形成光泽标记,而不使用透明调色剂。 具体地说,在要降低光泽的区域,形成图像所需的一部分有色调色剂并固定在片材上,然后在彩色调色剂定影之前未形成的剩余量需要 为了形成图像而形成和固定,以便与固定着色的调色剂重叠。